<!DOCTYPE html>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="help" href="https://drafts.csswg.org/css-values-5/#media-progress-func">
<link rel="author" title="sakhapov@chromium.org">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../support/numeric-testcommon.js"></script>
<div id="target"></div>
<style>
#target {
  font-size: 10px;
}
:root {
  width: 100vw;
  height: 100vh;
}
</style>
<script>
// innerWidth and innerHeight have lossy precision, see
// https://github.com/w3c/csswg-drafts/issues/5260.
let { width, height } = document.documentElement.getBoundingClientRect();

// Identity tests
// NOTE(emilio): We provide custom messages so that the test name doesn't
// depend on the viewport size (since in testharness.js files the viewport size is
// not guaranteed to be fixed, unlike in reftests).
test_math_used('media-progress(height from 0px to 1px)', height, { type:'number', 'msg': 'media-progress() identity check' });

// Nestings
test_math_used('media-progress(height from media-progress(height from 0px to 1px) * 1px to media-progress(height from 0px to 1px) * 1px)', '0', {type:'number'});

test_math_used('media-progress(height from media-progress(height from 0px to 1px) * 0.5px to media-progress(height from 0px to 1px) * 1px)', '1', {type:'number'});

// General calculations.
test_math_used('calc(media-progress(width from 0px to 50px) * 10px + 100px)', (width / 50 * 10 + 100) + 'px', { msg: 'media-progress() with length product' });
test_math_used('calc(media-progress(height from 10px to sign(50px - 500em) * 10px))', (height - 10) / (-10 - 10), { type:'number', msg: 'media-progress with complex to calculation' });

// Type checking
test_math_used('calc(media-progress(width from 0px to 1px) * 1px)', width + 'px', { msg: 'media-progress() as length' });
test_math_used('calc(media-progress(height from 0px to 1px) * 1s)', height + 's', { type:'time', msg: 'media-progress() as time' });
test_math_used('calc(media-progress(width from 0px to 1px) * 1deg)', width + 'deg', { type:'angle', approx:0.001, msg: 'media-progress() as angle' });
</script>
